Do a search under: "raammat".
I installed this plus Dynamat in my SS in 2010 and did two threads (7/24/10 with photos). I'm one of the very few here that seemed to care about cabin noise. This new Camaro has NO unibody insulation.
After installing the peel and stick type insulation from the front seats back, my Camaro is now wisper quiet. I then put Solo J-Pipes on and have a deep rumble outside with no drone and almost no noise inside. Worth every penny IMO.